Hoist for boat-launching devices.



A. E. -J L-UCKHURST.

HOIST FOR BOAT LAUNCHING DEVICES- APPLICATION FILED OCT-20.19I5.

Patented Nov. 21, 1916.

2 SHEETS-SHEET I.

Inventor:

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A. E. J. LUCKHURST.

HOIST FOR BOAT LAUNCHING DEVICES.

APPLICATION FILED OCT. 20. IBIS.

Patented Nov. 21, 1916.

2 ASHEETS-SHEET 2.

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ALLEN E. J. LUCKHURST, OF RIDGEWOOD, NEW JERSEY.

HOIST FOR IBOAT-LAUNGHING DEVICES.

Specification of Letters Patent.

Patented Nov. 21, 1916.

Application filed October 20, 1915. Serial No. 56,888.

To all whom it may concern:

Be it known that I, AnLEN E. J. LUCK- IIURST, a citizen of the UnitedStates, residing at Ridgewood, in the county of Bergen and State of NewJersey, have invented a new and useful Hoist for Boat-Launching Devices,of which the following is a specification.

This invention relates to devices for launching life boats, andespecially to hoists therefor, and relates more particularly to thehoist I use in raising and lowering the boats. This applicationdescribes more particularly the hoist which I use in my boat launchingdevice, an application for patent on which I have executed this daypreparatory to filing the same in the Patent Office of the UnitedStates.

The object of this invention is to provide a hoist which can be operatedeiiiciently from a safe position on the ship, and one with which thelife boats can be quickly raised and lowered.

The invention is illustrated in the accompanying drawings, in whichFigure 1, is a plan view of a portion of the deck of a ship and of aboat launching device with my improved hoist forming a part thereof;Fig. 2, is an elevation of one of the davits with my boat launchingdevice applied thereto,-my hoist forming a part thereof; Fig. 3, is aplan view, on an enlarged scale, with a part broken away, of my improvedhoist; and, Fig. 4, is a sectional elevation thereof, on the line 44 ofFig. 3.

In the drawings, like numerals of reference refer to the same parts ineach of the views.

In practice I provide a boat launching device in which the davits 6,carry the falls 7 from which the operative rope 8, may be rove throughan eyelet 9, on the davit, and through another eyelet 10, on the deck ofthe ship whereby the rope may be guided to the hoist 11, which I willnow describe in detail.

A suitable base 12, is provided, which is secured to the deck of theship within the line of the life boats so that any one operating thesame will never be exposed to danger of being hurled overboard. In thisbase is mounted two shafts, 13, and 14, on the ends of each of which,outside the base, are

drum ends 15, whereby there are a pair of drum ends in operativerelation to each other at each side of the hoist. Mounted on the shaft13, is a worm gear. 16, and on the shaft 14, a worm gear 17 and theseare so positioned relative to each other that both mesh with a worm 18,mounted on a shaft 19, which projects upwardly and backwardly from theside of the ship so that it may be operated with a crank 20, withoutexposing the operator to the danger of falling overboard.

By the construction of gearing just described both pair of drum ends areoperated simultaneously with the single crank 20; and the hoist is sopositioned that the adjacent ends of two life boats 21, may be raisedsimultaneously, as will be understood.

In operation both pair of drum ends 15, are rotated by the worm 18through the shaft 19, and crank 20, so that a rope 8, from the falls onthe adjacent davits may be clamped upon the respective drum ends and thefalls operated thereby. It is evi dent, too, that although both pair ofdrum ends are operated simultaneously, a rope 8, need be brought intooperative relation with only one pair whereby but a single life boatwill be moved.

The hoist is so constructed that it can be operated easily and quickly;and two boats can be raised as quickly as one by operating a singlecrank, and that from a point of safety.

I claim:

The combination with a boat launching device having mechanical means forrotat ing eachdavit located inwardly from the sides of the ship wherebyeach davit may be rotated without danger of the operator being lurched,or washed overboard, of a hoist located inwardly from thedavit-operating-means, said hoist having two pair of drum ends and aninclined operating shaft extending upwardly and rearwardly,

and having gearing connected with said Copies of this patent may beobtained for five cents each, by addressing the Commissioner of Patents,Washington, D. G.

